Step unit



FIG. 1 is a perspective view of a step unit, in an assembled configuration, showing my design.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a right side elevational view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a perspective view of a step member of the step unit.

FIG. 6 is a right side elevational view thereof.

FIG. 7 is a front elevational view thereof.

FIG. 8 is a rear elevational view thereof.

FIG. 9 is a top plan view thereof.

FIG. 10 is a bottom plan view thereof.

FIG. 11 is a perspective view of a rod member of the step unit.

FIG. 12 is a right side elevation view thereof.

FIG. 13 is a top plan view thereof.

FIG. 14 is a bottom plan view thereof.

FIG. 15 is a front elevation view thereof; and,

FIG. 16 is a rear elevational view thereof.

Members of the step unit are shown separately in FIGS. 5-16 for clarity of illustration. The broken lines shown in FIGS. 3 and 4 are for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a step unit, as shown and described. 